Boiler



(N0 Modem 2 Sheets-Sheet 1.-

W. W. KELSEY.

BOILER.

No.. 404,201. Patented May z8, 1889,.

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ATTORNEYS 2 sheets-sheet 2.

(No'Model.)

No. 404,201. Patented May 28, 1889.

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- INVENTUH ATTORNEYS WITNESSES UNITED STATES PATENT OFFICE VILLIAM W. KELSEY, OF CORTLAND, NEV YORK.

BOILER.

SPECIFICATION forming` part of Letters Patent No. 404,201, dated May 28, 1889. Application iiled January 21, 1889. Serial No.v296,951. (No model.)

To all whom it may concern:

Be it known that I, IVILLIAM IV. KELSEY, of Cortland, in the county of Cort-land, in the State of New York, have invented new and useful Improvements in Steam and Hot-Vater Boilers, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention consists in a novel construction of a steam andhot-water boiler which presents a superior amount of heating-surfaces and effects a great economy in the consumption of fuel.

The invention is fully illustrated in the annexed drawings, in which Figure l is a front elevation of my improved boiler with one-half of the inclosingcasings removed. Fig. 2 is a horizontal transverse section on line a' Fig. 1. Fig. 3 is a top plan view of the boiler with the top of the inclosing-casing broken away. Fig. 4 is avertical transverse section taken in a planel parallel with the front presented in Fig. l, and Fig. 5 is an enlarged Vertical transverse section of one of the corrugated walls of the boiler.

Similar letters of reference indicate corresponding parts.

A represents the ash-pit of the boiler, which is preferably composed of cast-iron and formed with a horizontal plate, A', at Jits top, which constitutes the base proper of the boiler, said plate being formed with a central opening, in which the grate B, of any suitable pattern, is located.

The boiler proper consists, essentially, of a plurality of hollow walls, a a c, which I preferably corrugate vertically internally as well as externally, as shown, or deflect them in a similar manner laterally from a vertical line at intervalsof their heights, the internal corrugations being parallel with those of the external corrugations and disposed with the outward convexed portions of the former directly opposite the concave portions of the latter, so as to impart a uniform'or approximately-uniform thickness of metal to the side plates of the hollow walls, as shown in Fig. 5 of the drawings. Said uniform distribution of met-al allows the walls to expand and contract withoutI unduly straining the metal and causing the same to crack, and also allows the heat to penetrate the side plates of the corrugated walls more uniformly at all points. The described hollow walls o a a are disposed parallel side by side and with the convexed y portions of each directly opposite the concave portions of the adjacent wall and with Vertical serpentine passages o o c between them for the products of combustion. The outer walls, a a, extend beneath the intermediate or central walls, and by said extensions form two hollow side walls or water-legs of the firepot P. The intermediate or central walls, a

-o o, being over the re-pot, form by their bases the crown of said fire-pot. The walls a a adjacent to the outer hollow walls are formed with tubular extensions a a at opposite ends, and between said extensions at the front of the fire-pot is ahorizontal hollow wall, t, extending from the base of the fire-pot part way the height thereof and leaving a feeddoor above said wall. The remainder of the central walls, a a, are provided with the tubular extension a a only at their rear ends, and form by said extensions the rear wall of the water-jacket of the hre-pot. All of said hollow walls are connected together by rods t t passing transversely through them and communicate with each other by water-ducts e c, to allow a proper circulation ofvwater in the boiler.

f represents the feed-water or water-supply pipe connected to the base of one of the outer hollow walls, c, and communicating with the interior thereof, and h h 7L denote steam or hot-water pipes connected to the top of one or more of the walls a a, to conduct either steam or hot water to the apartments of the building to be heated.

The described boiler is inclosed in a case, D, which is seated on a horizontal projection of the base-plate A and forms overthe'top of the boiler and around the sides thereof passages 'i i for the products of combustion. A direct exit-pipe, F, is attached to the top of the aforesaid case and provided with a damper, l, and an indirect exit-pipe, F', is attached to the bottom of the case. In starting the iire the aforesaid damper is to be opened to allow the products of combustion to escape direct through the pipe F, and thus produce the nec- IOO essary draft through the fire-pot. After the lire is fairly under way the aforesaid damper is to be closed, and then the products of combustion pass over the top of the walls a a a, then down on the exterior of the outer walls and ends of the walls to the bottom of the case I), from whence they escape through the pipe F. Said circulation of the products of combustion retards the escape thereof and retains the heat around the walls d a a, and the corrugated or distorted shape of the lat terincreases the heating-surfaces thereof and causes the same to be more effectively impinged by the products of combustion.

In order to utilize the heat radiating from the exterior of the case D, I surround the saine by a jacket orcase, I, which is provided with a cold-air inlet, a, at the base and with one or more l1ot-air pipes, O, at the top, which latter pipes are extended to the apartments to be heated.

That I claim as new, and desire to secure by Letters Patent, is-

l. A steam or hot-water boiler comprising a plurality of hollow walls corrugated externally and internally and disposed side by side, with passages for the product-s of coinbustion between them and with the corrugations of each parallel with those of the adj acent wall, and the water-supply pipe conimunieating with the interiors of said walls, as set forth.

2. A steam or hot-water boiler comprising a plurality of hollow walls corrugated vertically, externally, and internally, and disposed side by side, with the convex portions of each directly opposite the concave portions of the adjacent wall, and with passages for the products of combustion between them, substantially as described and shown.

3. In a steam or hot-Water boiler, the combination of a water-jacketed lire-pot, hollow walls rising from said water-jacket at opposite sides of the fire-pot and corrugated vertically, correspondingly corrugated hollow walls between the aforesaid walls, and each having its convex portions directly opposite the concave portions of the adjacent wall, and forming between them serpentine firepassages, and having their bases forming the crown of the iire-pot, and water-ducts connecting said hollow walls, as set forth.

Il. A steam or hotfwat-er boiler composed of a series of vertical hollow walls corrugated vertically and arranged parallel side by side, with passages for the products of combustion between them, the outer walls extending beneath the intermediate walls, and the grate surrounded by the bases of the outer walls, water-ducts connecting said walls, a case inclosing the aforesaid walls, with passages for the products of combustion between said case and outer Walls, and a smoke-exit pipe connected to the said case, substantially as described and shown.

In testimony whereof I have hereunto signed my naine, in the presence of two witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 17th day of January, 1889.

WILLIAM IV. KELSEY. lVitnesses:

C. ll. DUELL, MARK W. DEWEY. 

